3 // USRP - Universal Software Radio Peripheral
5 // Copyright (C) 2007 Corgan Enterprises LLC
7 // This program is free software; you can redistribute it and/or modify
8 // it under the terms of the GNU General Public License as published by
9 // the Free Software Foundation; either version 2 of the License, or
10 // (at your option) any later version.
12 // This program is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 51 Franklin Street, Boston, MA 02110-1301 USA
22 module strobe(clk_i,rst_i,ena_i,rate_i,strobe_i,strobe_o,count_o);
28 input [width-1:0] rate_i; // Desired period minus one
31 output [width-1:0] count_o;
34 reg [width-1:0] counter;
36 always @(posedge clk_i)
38 counter <= 32'hFFFFFFFF; // First period is short by one
43 counter <= counter + 1;
45 assign strobe_o = (counter == rate_i) & strobe_i;
46 assign count_o = counter;